County: Wabaunsee

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Photographer: Grace Muilenburg/KGS

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Short description: Sioux Quartzite in Wabaunsee County. Quartzite boulders that litter hillsides in parts of northeastern Kansas were carried in from the north about 700,000 years ago by massive sheets of ice. The boulders were eroded off outcrops around the intersection of Iowa, Minnesota, and South Dakota.

Hi-Resolution Version

Credit: This photo may be reproduced for non-commercial and educational purposes. When using this photo in a publication, website, or presentation, please credit Kansas Geological Survey. For information about use for commercial purposes, please contact the KGS editor.